title: In situ hydrogen ion measurements of the mouth, esophagus and stomach in newborn infants.
mesh_terms: D004947:Esophagus; D041981:Gastrointestinal Tract; D006801:Humans; D006863:Hydrogen-Ion Concentration; D009055:Mouth; D011522:Protons; D012463:Saliva; D013270:Stomach
chemical_list: D011522:Protons
keywords: GASTROINTESTINAL SYSTEM; HYDROGEN ION CONCENTRATION; SALIVA